Patients with iMCD in the deceased group (N=6) and non-deceased iMCD group (N=66). A, B and C show the mean +/− SD of IgM, INR and platelet count, respectively, in the deceased iMCD and non-deceased iMCD groups. a.u., astronomical unit; IgM, immunoglobin M; iMCD, idiopathic multicentric Castleman disease; INR, international normalised ratio; SD, standard deviation. *Significance.